How to execute Ctrl+Right Click in GUIDE listbox

Question

Alborz Sakhaei 2016-11-14

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/312051-how-to-execute-ctrl-right-click-in-guide-listbox

编辑： Alborz Sakhaei 2017-4-20

I have a simple GUIDE with one listbox. This is what I am trying to do with the listbox:

If Right-Click on an item --> Add word "Right" to the selected item string and if Right-Click again remove the added "Right" from the string.
If Crtl+Right-Click on an item --> Add word "Ctrl+Right" to the selected item string and if Ctrl+Right-Click again remove the added "Ctrl+Right" from the string.

I'm using figure "currentkey" property to get status of "Ctrl" key (pressed or not). Everything works fine except that once I Ctrl+Right-Click the Ctrl key "pressed" status remains latched (which makes sense given that "currentkey" property does not update until another key is being pressed). The problem is that after this when I Right-Click (only), although the Ctrl key is not pressed, the Ctrl+Right-Click executes (because of latched Ctrl key pressed status) which is not as desired. So, how can I get the Ctrl key "pressed" status update in "real time" i.e. for that very moment that I'm Right-Clicking on an item in the listbox?

PS: I have also tried other figure properties such as "selectiontype" , "KeyPressFcn" , "KeyReleaseFcn" , "WindowKeyPressFcn" , "WindowKeyReleaseFcn" non of which helped me resolve the Ctrl+Righ-Click issue.

Code is attached.